This patch prevents switch-robo.c from attempting robo_probe on a port
that is already registered. robo_probe will adjust kernel reference counts
if it detects a switch on the port. If this patch wasn't applied, the
wrt350n would hang on reboot, waiting for the network driver reference count
to reach zero indefinitely.
Signed-off-by: Ben Pfountz <netprince (at) vt (dot) edu>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11469 3c298f89-4303-0410-b956-a3cf2f4a3e73
